Respiratory burst activity was compared between cultured newborn rat microglia and directly
harvested adult rat peritoneal macrophages using a Clarke oxygen electrode system. Both
types of cells showed stimulated oxygen consumption almost immediately after the
administration of opsonized zymosan, phorbol myristate acetate, concanavalin A, or tuftsin.
The absolute values of stimulated oxygen consumption after administration of these agents
ranged from 0.11 to 0.99 nmol per min per million cells, with some variation in relative …